Picker-motion for looms



UNITE STATES PATEN OFFICE.

JOHN ROBINSON, OF ANDOVER, MASSACHUSETTS.

IE'ICKER-MOTION` FOR LOOMS.

Specification of Letters Patent No. 32,586, dated June 18, 1861.

To all whom it may concern:

Be it known that I, JOHN ROBINSON, of North Andover, in the county of Essex and State `of Massachusetts, have invented an Improved Picker-Motion for Looms; and I do hereby declare the same to be fully described in the following specification and represented in the accompanying drawings, of which- Figure, l, is a side elevation and Fig., 2, a longitudinal section of it.

In such drawings, A denotes the picker y staff, and B, the shuttle box of the lay of a loom. Vithin the said shuttle box and resting on its bottom is a picker carrier C, the same serving' to support a cushion or pickel' a. The said carrier embraces or extends around the picker staff, and so as to be capable of sliding freely up and down thereon, there being' within the picker statil a spring, Y), so applied to such picker staif as to press the latter downward toward the bottom of the shuttle box. Furthermore, the carrier C, is constructed with an extension or tail piece c, which projects. downward from the rear part of the carrier and through and somewhat beyond the picker sta-ff slot, CZ, of the bottom of the shuttle box. This tail piece should be about the width of the slot (l, in order that the tail piece may operate to steady the carrier in case of wear of the picker staff that may be occasioned by working of the carrier therein. There is also applied to the picker staif, a shoulder' or stop c, which is arranged beneaththe lower end of the tail piece or projection, c, and so as to serve as a rest or support for the tail piece and its carrier during the movement of the picker staff through the middle third portion of' its arc of motion. Vhile the picker staif is passing through such middle third part of the arc of its motion the carrier, C, by means of the tail piece, c, and the stop, e, will be maintained out of contact with the bottom of the shuttle box. Thus, during the middle third (or thereabout) of the movement `either backward or forward of the carrier in the shuttle box, such carrier will not rub on the bottom of the latter as it would if allowed to rest thereon during such period. The tail piece, c, and its rest or shoulder, e, thereby operate to save much friction and facilitate the movement of the picker staff or 'effecta saving of power in operating it. The spring, o, and thebottom of the shuttle box serve to regulate the upward and downward movement of the carrier, C, on the picker staff while the latter Vis in motion, the carrier under such circumstances being caused to move in a path suiiiciently straight to enable the shuttle to be driven forward in a straight line.

The foot of the picker staifis supported in a shoe p, which turns in a fulcrum, f, sustained by an adjustable slider, g, which slides freely on a horizontal bar or rod., z, and has a set screw z', by which it can be xed in place on the bar. This bar is intended to project from the loom frame. There is also another adjustable slider or spring case, Z', similarly adapted to the said bar and properly formed to hold a helical spring, Z, on the top of which an arm or projection, m, from the shoe, y), of the picker staff rests, and bears while the picker staff may` be in movement. This spring not only serves to throw or force the picker staff back to place after each throw of the shuttle but opera-tes as a means of gradually arresting the momentum of the said staff. By means of the rod, 7L, the adjustable sliders, g, and, 7c, and the arm, m, the picker staif and its spring, Z, may be simultaneously moved eithertoward or from the end of the loom frame and so as to be properly adjusted with reference to the shuttle box as circumstances may require. The fulcrum of the picker staff extends through a vertical slot, g, made in t-he slider f/ and is provided with a set screw, r, by which its vertical position can be adjusted and determined. Y

My improvements not only effect the results above stated, but render the operations of the picker staff very effect-ive. j

I claim- 1. The above specified arrangement A51d application of the picker carrierO, and the spring o, with the picker staff and the shuttle box. i i

2. The combination and arrangement of the tail piece, c, and the shoulder 0r stop7 e, plied to the picker staff and its spring' as with the errer, C, thedshuttle boX, andthe specified.

oeker sta as describe l 8. The Combination and arrangement 0f JOHN ROBINSON' 5 the supporting` rod, L, the adjustable ful- Witnesses:

Crum supporter', g, Jshe adjustable spring F. P. HALE, Jr.,

case, k, and the arm, m, the Whole being ap- WV. G. LEVI. 

